CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 138,792	$ 181,742
Accounts receivable, net	193,065	171,193
Inventories	151,534	133,906
Income taxes prepaid and receivable	8,076	5,213
Prepaid expenses and other current assets	11,980	9,251
Total current assets	503,447	501,305
Property, plant and equipment, net	446,814	422,564
Intangibles, net	62,916	66,454
Goodwill	164,328	160,375
Income taxes receivable and deferred	77,323	68,865
Contract receivables	21,581	14,045
Other assets	31,859	29,825
Total assets	1,308,268	1,263,433
LIABILITIES AND SHAREHOLDERS' EQUITY
Notes and loans payable	249	312
Accounts payable	46,666	43,305
Accrued liabilities	96,617	95,195
Current maturities of long-term debt	51,732	51,666
Income taxes payable	8,916	9,531
Total current liabilities	204,180	200,009
Long-term debt	444,030	432,918
Other noncurrent liabilities	104,893	106,827
Deferred taxes and other liabilities	13,074	12,389
Total liabilities	766,177	752,143
SHAREHOLDERS' EQUITY
Preferred stock, par value $5.00 per share; authorized 2,000,000 shares; none issued
Additional paid in capital	427,538	425,953
Retained earnings	523,875	522,855
Accumulated items of other comprehensive income:
Translation adjustments	(104,845)	(133,298)
Pension and postretirement liability adjustments	(52,466)	(51,719)
Derivative valuation adjustment	794	828
Treasury stock (Class A), at cost 8,431,335 shares in 2017 and 8,443,444 shares in 2016	(256,876)	(257,136)
Total Company shareholders' equity	538,060	507,523
Noncontrolling interest	4,031	3,767
Total equity	542,091	511,290
Total liabilities and shareholders' equity	1,308,268	1,263,433
Common Class A [Member]
SHAREHOLDERS' EQUITY
Common Stock	37	37
Common Class B [Member]
SHAREHOLDERS' EQUITY
Common Stock	$ 3	$ 3